This example demonstrates how to load and display metadata about CSS named colors using React and D3. The app fetches a CSV file from a GitHub gist with D3’s `csv` utility and stores the parsed result in React state via the `useState` and `useEffect` hooks. Once loaded, it renders a brief summary of the data, including its size in kilobytes, row count, and column count, using a custom `message` function. The visualization relies on React’s conditional rendering to show “data is: not loaded” before the asynchronous fetch completes.